4,5-Dimethoxycatechol

4,5-二甲氧基邻苯二酚

Also known as: 4,5-Dimethoxycatechol, 4,5-Dimethoxybenzene-1,2-diol, 1,2-Benzenediol, 4,5-dimethoxy-, 1,2-Dihydroxy-4,5-dimethoxybenzene, 4,5-Dimethoxypyrocatechol, Phloroglucinol Impurity 31

4,5-Dimethoxycatechol (CAS 1664-27-3) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C8H10O4 and a molecular weight of 170.16300 g/mol. It is also known as 4,5-Dimethoxybenzene-1,2-diol, 1,2-Benzenediol, 4,5-dimethoxy- and 1,2-Dihydroxy-4,5-dimethoxybenzene. Key properties include a boiling point of 354.1ºC at 760 mmHg, a density of 1.267 g/cm3 and a flash point of 168ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1664-27-3
Jingsj CID: J-1974782-8
Molecular Formula: C₈H₁₀O₄
Chinese Name: 4,5-二甲氧基邻苯二酚
Molecular Weight: 170.16300 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	354.1ºC at 760 mmHg
Density	1.267 g/cm3
Flash Point	168ºC

Frequently Asked Questions

What is the CAS number of 4,5-Dimethoxycatechol?

The CAS number of 4,5-Dimethoxycatechol is 1664-27-3.

What are the molecular formula and molecular weight of 4,5-Dimethoxycatechol?

4,5-Dimethoxycatechol has molecular formula C8H10O4 and molecular weight 170.16300 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4,5-Dimethoxycatechol (CAS 1664-27-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1974782-8 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.